The 60A SpikeSafe Source Measure Unit is capable of supplying output pulses with microsecond rise and fall times – key to precise LIDAR, VCSEL, LED photometric and electrical measurements. This current source supplies precise DC, continuous pulse, and single pulse currents. A precision hardware-controlled timing system supports pulse widths from 10µs to 15000s. Hardware triggering ensures measurement repeatability. Continuous power conversion technology means no duty cycle or pulse width limitations.
In addition to robust current capability, the SpikeSafe SMU features a low noise, true differential digitizer optimized for component testing. This digitizer can sample device Vf at 500ksps and pick up millivolt changes in voltage that occur during pulsed operation. This sensitivity supports the most accurate IES LM-85 and CIE 225 measurements. Other instruments, that rely on single-ended circuitry, suffer from high common mode noise, making accurate measurements difficult or impossible.
Devices being tested are protected with a gentle turn-on during ramp-up and with SpikeSafe load protection during operation. SpikeSafe load protection continuously monitors voltage and current patterns and instantly shuts down the drive current when device anomalies are detected.
The notable specifications for this current source are as follows: the low range output current accuracy is 0.2%+8mA. The high range output current accuracy is 0.3%+24mA. The pulse width range is 10µs-15000s and the pulse width accuracy is 1.3µs. The pulse rise/fall time is 3µs-5µs and the typical pulse width jitter is 30ns.
This model offers 500W total output power using an internal power supply. For more flexibility, use with an auxiliary power supply.
60A Source Pulse Shapes
Precision pulsing is key to best practices measurements. The 60A SpikeSafe Source Measure Unit offers programmable pulse width flexibility. It is capable of long pulse widths (ms to seconds) and short pulse widths (100us pulse widths and faster). Pulse width accuracy is 2.3us with pulse rise and fall times of 3us to 7us. Ramp time is adjustable from 1000V/s, 400A/s to 10V/s, 400mA/s. Programmable load tuning alters the 60A SpikeSafe Source Measure Unit current regulator response to compensate for load conditions, cable impedance, and length.
Learn more about our SpikeSafe Source Measure Units here.
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